//package com.example.demo.handler;
//
//
//import com.fasterxml.jackson.databind.ObjectMapper;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.http.HttpStatus;
//import org.springframework.security.core.AuthenticationException;
//import org.springframework.security.web.authentication.AuthenticationFailureHandler;
//import org.springframework.stereotype.Component;
//
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import java.io.IOException;
//import java.util.HashMap;
//import java.util.Map;
//
//@Component
//public class CustomLoginFailureHandler implements AuthenticationFailureHandler {
//
//    @Autowired
//    private ObjectMapper objectMapper;
//
//    @Override
//    public void onAuthenticationFailure(
//            HttpServletRequest request,
//            HttpServletResponse response,
//            AuthenticationException exception
//    ) throws IOException {
//        // 构建错误信息
//        Map<String, Object> result = new HashMap<>();
//        result.put("code", 401);
//        result.put("message", "登录失败: " + exception.getMessage());
//
//        // 设置响应格式
//        response.setStatus(HttpStatus.UNAUTHORIZED.value());
//        response.setContentType("application/json;charset=UTF-8");
//        response.getWriter().write(objectMapper.writeValueAsString(result));
//    }
//}
